/*******************************************************************************
* Copyright (c) 2010-2014 SAP AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* SAP AG - initial API and implementation
*******************************************************************************/
package org.eclipse.skalli.view.ext.impl.internal.infobox;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import org.eclipse.skalli.model.Project;
import org.eclipse.skalli.model.ext.commons.TaggingUtils;
import org.eclipse.skalli.services.tagging.TaggingService;
import org.eclipse.skalli.view.ext.ExtensionUtil;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.data.Validator;
import com.vaadin.ui.AbstractSelect.NewItemHandler;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.Component;
import com.vaadin.ui.CssLayout;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.Layout;
public class TagComponent extends CustomComponent {
private static final long serialVersionUID = 2926468032572843890L;
private static final String STYLE_TAG_COMPONENT = "tag-component"; //$NON-NLS-1$
private final Project project;
private final TaggingService taggingService;
private final ExtensionUtil util;
private final Layout layout;
private final CssLayout tagListLayout;
private final CssLayout tagComboBoxLayout;
@SuppressWarnings("serial")
public TagComponent(Project project, TaggingService taggingService, ExtensionUtil util) {
this.project = project;
this.taggingService = taggingService;
this.util = util;
tagListLayout = new CssLayout() {
@Override
protected String getCss(Component c) {
if (c instanceof Label) {
return "float: left; line-height: 18px; padding-right: 3px;";
} else {
return "float: left";
}
}
};
tagComboBoxLayout = new CssLayout();
tagComboBoxLayout.setSizeFull();
layout = new CssLayout();
layout.setSizeFull();
layout.addStyleName(STYLE_TAG_COMPONENT);
paintTagView();
setCompositionRoot(layout);
}
@SuppressWarnings({ "deprecation", "serial" })
private void paintTagView() {
layout.removeAllComponents();
Set<String> tags = TaggingUtils.getTags(project);
if (tags != null && tags.size() > 0)
{
Layout tagListLayout = new CssLayout() {
@Override
protected String getCss(Component c) {
if (c instanceof Label) {
return "float: left; line-height:18px; padding-right: 3px;";
} else {
return "float: left; padding-right: 5px";
}
}
};
tagListLayout.setSizeFull();
Label tagLabel = new Label("Tags:");
tagLabel.setSizeUndefined();
tagListLayout.addComponent(tagLabel);
for (String tag : tags) {
Button tagButton = new Button(tag, new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
String tag = event.getButton().getCaption();
util.getNavigator().navigateTagView(tag);
}
});
tagButton.setStyleName(Button.STYLE_LINK);
tagListLayout.addComponent(tagButton);
}
Button editButton = new Button("(edit tags)");
if (util.getLoggedInUser() != null) {
editButton.addListener(new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
paintTagEdit();
}
});
} else {
editButton.setEnabled(false);
editButton.setDescription("Login to tag this project");
}
editButton.setStyleName(Button.STYLE_LINK);
tagListLayout.addComponent(editButton);
layout.addComponent(tagListLayout);
}
else {
if (util.getLoggedInUser() != null) {
Button addTagButton = new Button("(add tags)", new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
paintTagEdit();
}
});
addTagButton.setStyleName(Button.STYLE_LINK);
layout.addComponent(addTagButton);
}
}
}
@SuppressWarnings({ "deprecation", "serial" })
private void paintTagEdit() {
layout.removeAllComponents();
layout.setSizeFull();
paintEditTagList();
layout.addComponent(tagListLayout);
paintTagComboBoxLayout();
layout.addComponent(tagComboBoxLayout);
Button doneButton = new Button("done", new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
paintTagView();
}
});
doneButton.setStyle(Button.STYLE_LINK);
layout.addComponent(doneButton);
}
@SuppressWarnings({ "deprecation", "serial" })
private void paintEditTagList() {
tagListLayout.removeAllComponents();
tagListLayout.setWidth("100%"); //$NON-NLS-1$
Label tagLabel = new Label("Tags:");
tagLabel.setSizeUndefined();
tagListLayout.addComponent(tagLabel);
SortedSet<String> tags = TaggingUtils.getTags(project);
for (String tag : tags) {
Layout l = new CssLayout() {
@Override
protected String getCss(Component c) {
if (c instanceof Label) {
return "float: left; line-height: 18px; padding-right: 3px"; //$NON-NLS-1$
} else {
return "float: left; line-height: 18px; padding-right: 5px"; //$NON-NLS-1$
}
}
};
Label label = new Label(tag);
label.setSizeUndefined();
l.addComponent(label);
Button removeButton = new Button("(remove)", new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
String tag = (String) event.getButton().getData();
TaggingUtils.removeTag(project, tag);
util.persist(project);
paintTagEdit();
}
});
removeButton.setStyleName(Button.STYLE_LINK);
removeButton.setData(tag);
removeButton.setSizeUndefined();
l.addComponent(removeButton);
tagListLayout.addComponent(l);
}
}
@SuppressWarnings("serial")
private void paintTagComboBoxLayout() {
tagComboBoxLayout.removeAllComponents();
// add tag input field
final ComboBox tagComboBox = new ComboBox();
SortedMap<String,Integer> availableTags = taggingService.getTags(Project.class);
for (String tag : availableTags.keySet()) {
tagComboBox.addItem(tag);
}
tagComboBox.setNewItemsAllowed(true);
tagComboBox.setNewItemHandler(new NewItemHandler() {
@Override
public void addNewItem(String newItemCaption) {
Collection<Validator> validators = tagComboBox.getValidators();
for (Validator val : validators) {
if (!val.isValid(newItemCaption)) {
Iterator<Component> it = tagComboBoxLayout.getComponentIterator();
it.next(); // this is the combobox
if (!it.hasNext()) {
tagComboBoxLayout.addComponent(new Label("Use lowercase letters without whitespaces only."));
}
return;
}
}
if (!tagComboBox.containsId(newItemCaption)) {
TaggingUtils.addTags(project, newItemCaption);
util.persist(project);
paintTagEdit(); // TODO performance?
}
}
});
tagComboBox.addListener(new ValueChangeListener() {
@Override
public void valueChange(ValueChangeEvent event) {
if (!TaggingUtils.hasTag(project, event.getProperty().getValue().toString())) {
TaggingUtils.addTags(project, event.getProperty().getValue().toString());
util.persist(project);
paintTagEdit(); // TODO performance?
}
}
});
tagComboBox.setImmediate(true);
tagComboBox.setInputPrompt("Enter tag confirmed by enter");
tagComboBox.setWidth("300px");
tagComboBox.setNullSelectionAllowed(false);
tagComboBox.focus();
tagComboBox.addValidator(new TagValidator());
tagComboBoxLayout.addComponent(tagComboBox);
}
private static class TagValidator implements Validator {
private static final long serialVersionUID = -8732474379417852332L;
@Override
public void validate(Object value) throws InvalidValueException {
if (!isValid(value)) {
throw new InvalidValueException("tags can only contain lowercase characters and digits");
}
}
@Override
public boolean isValid(Object value) {
char[] chars = value.toString().toCharArray();
for (int i = 0; i < chars.length; i++) {
int charType = Character.getType(chars[i]);
if (!(charType == Character.LOWERCASE_LETTER
|| charType == Character.DECIMAL_DIGIT_NUMBER)) {
return false;
}
}
return true;
}
}
}